421816070 has 128 divisors (see below), whose sum is σ = 919683072. Its totient is φ = 137779200.

The previous prime is 421816063. The next prime is 421816081. The reversal of 421816070 is 70618124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3219905 + ... + 3220035.

It is an arithmetic number, because the mean of its divisors is an integer number (7185024).

Almost surely, 2^421816070 is an apocalyptic number.

421816070 is an abundant number, since it is smaller than the sum of its proper divisors (497867002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421816070 is a wasteful number, since it uses less digits than its factorization.

421816070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 421816070 is about 20538.1613101076. The cubic root of 421816070 is about 749.9650768924.

The spelling of 421816070 in words is "four hundred twenty-one million, eight hundred sixteen thousand, seventy".